Arduino newsletter

Top new questions this week:

Arduino Remote controlled RGB LED strip, having issues with brightness/dimming

I have this sketch: #include <TimerOne.h> #include <IRremote.h> #include <RGBMood.h> int RECV_PIN = 2; // IR-Receiver PIN int led = 13; // Satus-LED PIN int modus; …

programming led

asked by Stathis Ntonas 3 votes answered by geometrikal 2 votes

Delay function without using a timer

Is there a delay function available that does not use millis() which itself makes use of a timer? Does not need to be hyper-exact.

time

asked by Thomas S. 3 votes answered by Gerben 4 votes

Shortest time interval that Arduino Uno R3 can read

I am doing a light speed determination experimsmt. Lightspeed is around 3*10^8 m/s. For this, I need to measure time interval between 2 light sensors in nanoseconds, Somewhere about 50ns. Is this …

time

asked by Damodar Dahal 2 votes answered by BrettM 1 vote

Arduino Packet for Bluetooth

I'm having trouble figuring out how to start my project. The objective is to control a robot with four servo motors and six DC motors through bluetooth. I have a bluetooth shield from Adafruit and I'm …

motor bluetooth servo

asked by user3403 1 vote answered by Chris Stratton 1 vote

Computer not detecting my Arduino MEGA 2560 R3

I've tried different USB cables, computers, ports and none of them can detect my possibly bricked Mega 2560 R3. Nothing shows up at all in the Device Manager, not even "Unknown Device". When the …

arduino-mega led

asked by user29269 1 vote answered by MatsK 0 votes

Is it possible to program an Attiny85 with a USB-to-TTL converter?

I currently use my Arduino to program Attiny85. As I have one of these USB-to-TTL adapters I am wondering if it is possible to program Attiny85 with it, to free up my Arduino. I know it is possible to …

avr attiny

asked by marlar 1 vote answered by mpflaga 0 votes

LED's won't light up when LCD/RNG hits 2 || 3 of a kind

I am a true beginner here. Trying to build a "slot machine" type game and am in the beginning stages. Found a RNG for LCD code and tweaked it a bit to get three digits to display randomly. Worked just …

arduino-uno sketch lcd

asked by SWTORguy 1 vote answered by SWTORguy 1 vote

Greatest hits from previous weeks:

Level detection of 3.3V from 5V arduino

A quick question about microcontroller digital level on I/O pins. I have a photo interrupter which is powered at 3.3V which is interfaced to Arduino UNO running at 5V. For microcontroller to detect …

voltage-level

asked by David Norman 5 votes answered by Ignacio Vazquez-Abrams 7 votes

What is the smallest method of connecting an arduino to 110v / 220v?

There are a lot of methods to power an arduino from a large range of voltages usb cable from pc or from a phone charger or an usb hub step down convertors step up converters switching power supply …

arduino-uno power arduino-nano arduino-pro-mini electricity

asked by vlad b. 3 votes answered by Annonomus Penguin 1 vote

Can you answer these?

There is any way to simulate an arduino due?

As the title says there is any program that can simulate an arduino due? I like the design of Proteus 8 but he can't simulate it. Only the arduino Uno R3, Mega and another one that I forgot the name.

programming arduino-due simulator

asked by Max 1 vote

How to tap my thermostat's serial line

This is a home heating system hack. I want to add an arduino in-line between my thermostat and air handler; and possibly between the air handler and outdoor compressor. The long-term goal is to post …

serial

asked by ericx 1 vote